9791447 has 4 divisors (see below), whose sum is σ = 9937656. Its totient is φ = 9645240.

The previous prime is 9791423. The next prime is 9791459. The reversal of 9791447 is 7441979.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7441979 = 131 ⋅56809.

It is a cyclic number.

It is not a de Polignac number, because 9791447 - 2¹⁰ = 9790423 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9793447) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 73004 + ... + 73137.

It is an arithmetic number, because the mean of its divisors is an integer number (2484414).

Almost surely, 2^9791447 is an apocalyptic number.

9791447 is a deficient number, since it is larger than the sum of its proper divisors (146209).

9791447 is a wasteful number, since it uses less digits than its factorization.

9791447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 146208.

The product of its digits is 63504, while the sum is 41.

The square root of 9791447 is about 3129.1287924916. The cubic root of 9791447 is about 213.9352221907.

The spelling of 9791447 in words is "nine million, seven hundred ninety-one thousand, four hundred forty-seven".